1123423212321 has 32 divisors (see below), whose sum is σ = 1676968272000. Its totient is φ = 743265089280.

The previous prime is 1123423212251. The next prime is 1123423212323. The reversal of 1123423212321 is 1232123243211.

1123423212321 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 423 + 2 + 1 + 232 + 1 = 666.

It is not a de Polignac number, because 1123423212321 - 2¹⁰ = 1123423211297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1123423212323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13166605 + ... + 13251653.

It is an arithmetic number, because the mean of its divisors is an integer number (52405258500).

Almost surely, 2^{1123423212321} is an apocalyptic number.

It is an amenable number.

1123423212321 is a deficient number, since it is larger than the sum of its proper divisors (553545059679).

1123423212321 is a wasteful number, since it uses less digits than its factorization.

1123423212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88766 (or 88760 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 1123423212321 its reverse (1232123243211), we get a palindrome (2355546455532).

The spelling of 1123423212321 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-three million, two hundred twelve thousand, three hundred twenty-one".